Tuned In Four Graded Pieces for Two-Mallet Marimba Four Graded Pieces for Multi-Mallet Marimba LCM Tuned Percussion Grades 1 & 2 LCM Tuned Percussion Grades 3 & 4 LCM Tuned Percussion Grades 5 & 6 LCM Tuned Percussion Grades 7 & 8